ANIMALS - INDIVIDUAL - COUNTS, Displacement Volume, TAXONOMIC CODE, SPECIES IDENTIFICATION - SEX and species abundance tows data collected in the Gulf of Alaska and North Pacific Ocean on the CHARTER/FISHING BOATS cruises GP0401-01 and GP0401-02 as part of the NEP project from 2004-10-19 to 2004-11

NODC Accession 0115259 includes tows and biological data collected aboard the CHARTER/FISHING BOATS during cruises GP0401-01 and GP0401-02 in the Gulf of Alaska and North Pacific Ocean from 2004-10-19 to 2004-11-08. These data include ANIMALS - INDIVIDUAL - COUNTS, Displacement Volume, TAXONOMIC CODE, SPECIES IDENTIFICATION - SEX and species abundance. The instruments used to collect these data include net. These data were collected by Edward D. Cokelet and Edward V. Farley of National Oceanic and Atmospheric Administration and Ken Coyle and Seth Danielson of University of Alaska Fairbanks as part of NEP. The Biological and Chemical Oceanography Data Management Office (BCO-DMO) submitted these data to NODC on 2013-09-24.

The following is the text of the abstract provided by BCO-DMO:

Gulf of Alaska Bongo catch data
Zooplankton counts for bongo net hauls in the Gulf of Alaska during 2004.
Marine Ecosystem Monitoring in the Northern Gulf of Alaska (http://www.ims.uaf.edu/GLOBEC/)web site
GAK1 Time Series (http://www.ims.uaf.edu/gak1/) web site
This project is to conduct the Gulf of Alaska Long-Term Observation Program (GOA-LTOP) as part of Phase II of the Northeast Pacific (NEP) GLOBEC program. The GOA shelf supports a rich ecosystem that includes many commercially important fisheries. The basis for this productivity is enigmatic for the GOA shelf is deep, forced by downwelling-favorable winds, and fed by a massive nutrient-poor coastal freshwater discharge. Both the winds and the freshwater discharge are intimately linked to the strength and position of the Aleutian Low. The GOA ecosystem experiences substantial physical and biological changes on decadal and interannual time scales. Although some of these changes are correlated with various climatic indices a mechanistic understanding of climate change and ecosystem response is unavailable. The generic goal of this LTOP is to understand and quantify temporal (seasonal and interannual) and spatial (cross- and along-shelf) variations in the thermohaline, chemical, and biological properties and relationships of this shelf. Our proposal supports GLOBEC goals that will help: 1) retrospective studies interpret historical data, 2) design a cost-effective long-term monitoring program, 3) provide the seasonal and interannual context for concurrent mesoscale and process studies, and 4) provide boundary conditions and data sets for model evaluation. This 5-year project entails 4 field years and a fifth year for data analyses and synthesis. The field effort involves seven, 9-day interdisciplinary cruises/year in the northern GOA. The study area encompasses the 220-km long, Seward Line (sampled in the 1970s) that extends across the shelf and slope and high resolution sampling of the Alaska Coastal Current (ACC), upstream, downstream, and within Prince William Sound. The ACC is an important shelf habitat for yoy salmon migrating from nursery areas in the sound and into the GOA. The sampling effort (Table A) is year-round and motivated by seasonally significant physical and biological events affecting yoy pink salmon.
Table A. Sampling schedule and rationale for GOA-LTOP. (Key for Winds, Discharge and Stratification: S=strong; M=moderate; W=weak; D=downwelling winds; U=upwelling winds; V=variable; L=low; H=high) Deep water moves onshore during the July-August upwelling period.

Month
Sampling
Physical Rationale
Biological Rationale

CTD
Nutrients
Zoo
Fish
Winds
Disch
Strat

March
X
X
X

D S
L
W
Zooplankton migrate from depth (at shelfbreak); transported inshore.

April
X
X
X

D M
L-M
W V
Phytoplankton bloom

May
X
X
X

D M-W
M
M V
Maximum oceanic copepod biomass.

July
X
X
X
X
D/U W
M-H
S
Maximum zooplankton abundance; YOY salmon enter shelf.

August
X
X
X
X
D/U W
M-H
S
Maximum YOY salmon abundance on shelf.

October
X
X
X
X
D S
H
H
YOY salmon on shelf.

December
X
X
X

D S
M
M
Fall-winter pre-conditioning for spring nutrients, small zooplankton.

The sampling protocol follows GLOBEC guidelines and uses gear types and techniques similar to those in the Oregon LTOP that is also a part of the NEP-GLOBEC program. Most of the research will be conducted from the R/V Alpha Helix. Fish sampling will be done from a chartered trawler in July, August, and October. Both vessels will work together during these cruises so that the fishing charter can verify fish targets detected on the acoustics array towed from the Alpha Helix.
This page was last updated on September 22, 2000.

Maintained by:
Hal Batchelder [[e-mail] (mailto:[e-mail])
College of Oceanic & Atmospheric Sciences
Oregon State University
Corvallis, OR 97331-5503
phone: [phone]; FAX [phone]

国家海洋数据中心（National Oceanographic Data Center, NODC）登录号0115259包含了2004年10月19日至2004年11月8日期间，在阿拉斯加湾与北太平洋开展的GP0401-01、GP0401-02航次中，由包租渔船收集的拖网作业数据与生物数据。该批数据涵盖个体动物计数、置换体积、分类代码、物种鉴定（性别）以及物种丰度。采集此类数据所用的仪器为网具。数据由美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration, NOAA）的Edward D. Cokelet与Edward V. Farley，以及阿拉斯加费尔班克斯大学的Ken Coyle与Seth Danielson作为东北太平洋（Northeast Pacific, NEP）项目的一部分收集。生物与化学海洋学数据管理办公室（Biological and Chemical Oceanography Data Management Office, BCO-DMO）于2013年9月24日将该批数据提交至NODC。

以下为BCO-DMO提供的摘要文本：

阿拉斯加湾邦戈网捕捞数据
2004年阿拉斯加湾邦戈网拖网浮游动物计数
北阿拉斯加湾海洋生态系统监测（http://www.ims.uaf.edu/GLOBEC/）网站
GAK1时间序列（http://www.ims.uaf.edu/gak1/）网站

本项目为作为东北太平洋全球海洋生态系统动力学研究（Northeast Pacific Global Ocean Ecosystem Dynamics, NEP GLOBEC）计划第二阶段组成部分的阿拉斯加湾长期观测计划（Gulf of Alaska Long-Term Observation Program, GOA-LTOP）。阿拉斯加湾陆架拥有丰富的生态系统，涵盖众多具有重要商业价值的渔业资源。阿拉斯加湾陆架的高生产力成因一直成谜：该海域水体深邃，受有利于下降流的风驱动，且受大规模营养匮乏的沿岸淡水径流补给。风场与淡水径流均与阿留申低压的强度与位置密切相关。阿拉斯加湾生态系统在年代际与年际尺度上均经历显著的物理与生物变化。尽管其中部分变化与多种气候指数存在相关性，但目前仍缺乏对气候变化与生态系统响应的机制性理解。本长期观测计划的总体目标是理解并量化该陆架的温盐、化学与生物属性及其相互关系在时间（季节与年际）与空间（跨陆架与沿陆架）尺度上的变化。本项目支持全球海洋生态系统动力学研究的目标，具体可助力：1）回顾性研究解读历史数据；2）设计兼具成本效益的长期监测计划；3）为同期的中尺度与过程研究提供季节与年际尺度的背景信息；4）为模型评估提供边界条件与数据集。本项目为期5年，包含4个野外作业年份与第5年的数据整理与综合分析。野外作业每年在北阿拉斯加湾开展7次、每次9天的多学科航次。研究区域覆盖横跨陆架与陆坡的220公里长Seward断面（该断面于1970年代完成采样），以及阿拉斯加沿岸流（Alaska Coastal Current, ACC）、其上游、下游与威廉王子湾内的高分辨率采样。阿拉斯加沿岸流是幼龄（Young of the Year, YOY）鲑鱼从育苗场索饵洄游至阿拉斯加湾的重要沿岸栖息地。采样工作（见表A）全年开展，其设计初衷是响应影响幼龄粉鲑的季节性显著物理与生物事件。

表A GOA-LTOP采样计划与依据。（风场、径流与层化说明：S=强；M=中等；W=弱；D=下降流风；U=上升流风；V=可变；L=低；H=高） 7-8月上升流期间，深水向近岸移动。

| 月份 | CTD | 营养盐 | 浮游动物 | 鱼类 | 风场 | 径流 | 层化 | 采样依据 |
|------|-----|--------|----------|------|------|------|------|----------|
| 3月 | ✔ | ✔ | ✔ | | D、S | L | W | 浮游动物从陆坡深处洄游并被输送至近岸 |
| 4月 | ✔ | ✔ | ✔ | | D、M | L-M | W、V | 浮游植物水华 |
| 5月 | ✔ | ✔ | ✔ | | D、M-W | M | M、V | 海洋桡足类生物量达到峰值 |
| 7月 | ✔ | ✔ | ✔ | ✔ | D/U、W | M-H | S | 浮游动物丰度达到峰值；幼龄鲑鱼进入陆架 |
| 8月 | ✔ | ✔ | ✔ | ✔ | D/U、W | M-H | S | 陆架上幼龄鲑鱼丰度达到峰值 |
| 10月 | ✔ | ✔ | ✔ | ✔ | D、S | H | H | 幼龄鲑鱼停留于陆架 |
| 12月 | ✔ | ✔ | ✔ | | D、S | M | M | 秋季-冬季为春季营养盐与小型浮游动物预适应阶段 |

采样方案遵循全球海洋生态系统动力学研究规范，使用的装备与技术与同为东北太平洋全球海洋生态系统动力学研究计划组成部分的俄勒冈州长期观测计划一致。大部分研究工作由“Alpha Helix”号研究船完成。鱼类采样将于7月、8月与10月在包租拖网渔船上开展。在此类航次中，两艘船将协同作业，以便包租渔船核实“Alpha Helix”号拖曳的声学阵列探测到的鱼类目标。

本页面最后更新于2000年9月22日。

维护方：Hal Batchelder [[e-mail]]
海洋与大气科学学院
俄勒冈州立大学
科瓦利斯，俄勒冈州97331-5503
电话：541-737-4500；传真：541-737-2064